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- Question
When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the
Options- A. head
- B. shank
- C. thread
- D. middle
- Correct Answer
- thread
- 1. The centre of gravity of a quadrant of a circle lies along its central radius (r) at a distance of
Options- A. 0.5r
- B. 0.6r
- C. 0.7r
- D. 0.8r Discuss
- 2. In turbines, the fluid undergoes a continuous steady flow process and the speed of flow is
Options- A. low
- B. very low
- C. high
- D. very high Discuss
- 3. Oil separator in a refrigeration cycle is installed
Options- A. before compressor
- B. between compressor and condenser
- C. between condenser and evaporator
- D. between condenser and expansion valve Discuss
- 4. The unit of angular velocity is
Options- A. m/min
- B. rad/s
- C. revolutions/min
- D. both (B) and (C)
- E. none of these Discuss
- 5. Which of the following boiler works on a forced circulation of water?
Options- A. La-mont boiler
- B. Benson boiler
- C. Loeffler boiler
- D. all of these Discuss
- 6. The temperature of air recorded by a thermometer, when it is not effected by the moisture present in the air, is called
Options- A. wet bulb temperature
- B. dry bulb temperature
- C. dew point temperature
- D. none of these Discuss
- 7. For gas welding, the pressure desired at the welding torch for oxygen is
Options- A. 7 to 103 kN/m2
- B. 70 to 280 kN/m2
- C. 280 to 560 kN/m2
- D. 560 to 840 kN/m2 Discuss
- 8. The fuel valve in a four stroke cycle diesel engine
Options- A. opens at 15° after top dead centre and closes at 20° before bottom dead centre
- B. opens at 15° before top dead centre and closes at 20° after top dead centre
- C. opens at top dead centre and closes at bottom dead centre
- D. may open and close anywhere Discuss
- 9. The process of removing the burnt gases from the engine cylinder by the fresh charge coming into the engine cylinder from the crank-case, is known as
Options- A. cleaning
- B. priming
- C. scavenging
- D. detonation Discuss
- 10. As compared to air standard cycle, in actual working, the effect of variation in specific heats is to
Options- A. increase maximum pressure and maximum temperature
- B. reduce maximum pressure and maximum temperature
- C. increase maximum pressure and decrease maximum temperature
- D. decrease maximum pressure and increase maximum temperature Discuss
More questions
Correct Answer: 0.6r
Correct Answer: very high
Correct Answer: between compressor and condenser
Correct Answer: both (B) and (C)
Correct Answer: all of these
Correct Answer: dry bulb temperature
Correct Answer: 70 to 280 kN/m2
Correct Answer: opens at 15° before top dead centre and closes at 20° after top dead centre
Correct Answer: scavenging
Correct Answer: reduce maximum pressure and maximum temperature
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